Ventilator



ARTHUR w. LUCAS, or FREMONT, NEBnAskA.

VENTILATOR.

J Specification of Letters Patent.

Patented Aug. 30, 1921 Application filed March 26, 1921. Serial No. 455,875.

To all whom it may concern. 7

Be it known that I, ARTHUR W. LUcAs, a citizen of the United States, residing at Fremont, in the county of Dodge and State of Nebraska, have invented certain new and useful Improvements in Ventilators, of which the following is a specification, reference being had to the accompanying drawin s.

This invention relates to improvements in ventilators and 1110115 particularly to a forced draft ventilator.

An important object of the invention is to provide a'device of this type in which a forced draft is secured by means of a heating element located within the ventilator.

A further object of the invent on is t0 provide a ventilator of this type in wh ch the heat rays emanating from the heating element are directed toward the discharge end of the ventilator and consequently form a forced fraft directed through such d1scharge end.

A further object of the invention is to provide a device of this character which is extremely simple in construction and arrangement and which may be very cheaply manufactured.

Other objects and advantages of the invention will become apparent throughout the course of the following description.

In the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention and wherein like reference characters designate like parts throughout,

Figure 1 is a side elevation partly 1n section ofa ventilator constructed in accordance with my invention, and

Fig. 2 is a fragmentary sectional view thereof.

Referring now more particularly to the drawings, the numeral lO indicates an intake conduit which communicates at its inner end with a bell slip joint 11. The inner end of the intake conduit 10 has spaced supports 12 secured thereto, as at 13, and extending upwardly into the male member 14 of the slip joint 11. -The lower end of the to be secured male member 14 is reduced, as at 15, and abuts a shoulder 16 formed upon the outer surface of the intake pipe 10. y

The upper ends of the supports 12 are provided with angular portions 12 adapted inany suitable manner to a concavo-convex radiating plate 17, having its inner or concave surface directed toward the discharge. end of the ventilator and highly polished. Secured within the radiating plate 17 is a heating element 18 disclosed in the present instance as an asbestos spool 19 having wound thereupon a resistance element 20, the ends of which are electrically connected with supports 21 serving to hold the heating element in spaced relation to the concave face of the radiator plate. The supports 2l-are in circuit with wires 22 which extend in the intake pipe 10 and have 1n circuit therewith a source of electrical supply 24 and a switch 25 by means of which the circuit may be governed. The female member 26 of the bell slip 11 has formed thereon or secured thereto an exhaust pipe 27 shown in the present instance as having its exhaust end communicating withthe atmosphere exteriorly of a room in which the ventilator is employed. The exhaust pipe 27 has secured therein a screen 29 to prevent the passage of dust, etc., for contact with the heating 1 element 18. will be obvious that while I have shown and described a ventilator for removing air from a room, that the same may be reversed in its use and employed for induction of heated air into a room. From the foregoing it is believed to be obvious that I have constructed a ventilator which is'particularly well adapted for the purposefor which it is intended by reason of the fact that it provides for forced ventilation without the necessity of employing mechanical. means or of employing a heating element which is cumbersome and difiicult to operate, and it will furthermore be obvious that the construction of same as hereinbefore set forth is capable of some change without departing from the spirit of my through openings 23 formed I invention. I accordingly do not limit myself to the specific structure hereinabove set forth except as hereinafter claimed.

What I claim is:

In a ventilator, intake and exhaust conduits, a bell slip joint connecting said conduits, supports secured to the intake conduit and extending into the slip joint, an imperforate concavo-convex radiator plate mounted upon the said supports and disposed within said slip joint, the concave face of said radiator plate being directed toward the exhaust conduit, and a heating element supported by the radiator plate and lying within the concavity thereof.

In testimony whereof I afiix my signature.

ARTHUR W. LUCAS. 

